/**
* funct_host_notify_timer() - Initialize the timer for USB host driver.
* @data: usb host data.
*
* This function runs the timer for the USB host mode.
*/
static void funct_host_notify_timer(unsigned long data)
{
if (!cpu_is_u5500()) {
struct musb *musb = (struct musb *)data;
unsigned long flags;
u8 devctl;
spin_lock_irqsave(&musb->lock, flags);
stm_set_peripheral_clock(PERI5_CLK_ENABLE);
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
switch (musb->xceiv->state) {
case OTG_STATE_A_WAIT_BCON:
if (devctl & MUSB_DEVCTL_BDEVICE) {
musb->xceiv->state = OTG_STATE_B_IDLE;
MUSB_DEV_MODE(musb);
} else {
musb->xceiv->state = OTG_STATE_A_IDLE;
MUSB_HST_MODE(musb);
}
#ifdef CONFIG_PM
if (!(devctl & MUSB_DEVCTL_SESSION))
stm_musb_context(USB_DISABLE);
#endif
break;
case OTG_STATE_A_SUSPEND:
default:
break;
}
stm_set_peripheral_clock(PERI5_CLK_DISABLE);
spin_unlock_irqrestore(&musb->lock, flags);
DBG(1, "otg_state %s devctl %d\n", otg_state_string(musb),
devctl);
}
}
/**
* usb_device_phy_en() - for enabling the 5V to usb gadget
* @enable: to enabling the Phy for device.
*
* This function used to set the voltage for USB gadget mode.
*/
static void usb_device_phy_en(int enable)
{
int volt = 0;
int ret = -1;
if (phy_enable_stat == enable)
return;
if (enable == USB_ENABLE) {
wake_lock(&ab8500_musb_wakelock);
ux500_pins_enable(usb_gpio_pins);
clk_enable(sysclock);
phy_enable_stat = USB_ENABLE;
regulator_enable(musb_vape_supply);
regulator_enable(musb_smps2_supply);
/* Set Vintcore12 LDO to 1.3V */
ret = regulator_set_voltage(musb_vintcore_supply,
1300000, 1350000);
if (ret < 0)
printk(KERN_ERR "Failed to set the Vintcore"
" to 1.3V, ret=%d\n", ret);
ret = regulator_set_optimum_mode(musb_vintcore_supply,
28000);
if (ret < 0)
printk(KERN_ERR "Failed to set optimum mode"
" (ret=%d)\n", ret);
regulator_enable(musb_vintcore_supply);
volt = regulator_get_voltage(musb_vintcore_supply);
if ((volt != 1300000) && (volt != 1350000))
printk(KERN_ERR "Vintcore is not"
" set to 1.3V"
" volt=%d\n", volt);
#ifdef CONFIG_PM
stm_musb_context(USB_ENABLE);
#endif
/* Workaround for USB performance issue. */
schedule_delayed_work_on(0,
&work_usb_workaround,
msecs_to_jiffies(USB_PROBE_DELAY));
prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
DEVICE_NAME, 100);
abx500_set_register_interruptible(device,
AB8500_USB,
AB8500_USB_PHY_CTRL_REG,
AB8500_USB_DEVICE_ENABLE);
} else { /* enable == USB_DISABLE */
/*
* Workaround: Sometimes the DISCONNECT interrupt is
* not generated in musb_core. Force a disconnect if
* necessary before we power down the PHY.
*/
stm_musb_force_disconnect();
if (boot_time_flag)
boot_time_flag = USB_DISABLE;
/*
* Workaround for bug31952 in ABB cut2.0. Write 0x1
* before disabling the PHY.
*/
abx500_set_register_interruptible(device, AB8500_USB,
AB8500_USB_PHY_CTRL_REG,
AB8500_USB_DEVICE_ENABLE);
udelay(200);
abx500_set_register_interruptible(device,
AB8500_USB,
AB8500_USB_PHY_CTRL_REG,
AB8500_USB_DEVICE_DISABLE);
prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
DEVICE_NAME, 50);
/* Workaround for USB performance issue. */
cancel_delayed_work_sync(&work_usb_workaround);
prcmu_qos_update_requirement(PRCMU_QOS_ARM_OPP,
"usb", 25);
prcmu_release_usb_wakeup_state();
phy_enable_stat = USB_DISABLE;
regulator_disable(musb_vape_supply);
regulator_disable(musb_smps2_supply);
regulator_disable(musb_vintcore_supply);
regulator_set_optimum_mode(musb_vintcore_supply, 0);
/* Set Vintcore12 LDO to 0V to 1.35V */
ret = regulator_set_voltage(musb_vintcore_supply,
0000000, 1350000);
if (ret < 0)
printk(KERN_ERR "Failed to set the Vintcore"
" to 0V to 1.35V,"
" ret=%d\n", ret);
clk_disable(sysclock);
#ifdef CONFIG_PM
stm_musb_context(USB_DISABLE);
#endif
ux500_pins_disable(usb_gpio_pins);
wake_unlock(&ab8500_musb_wakelock);
}
}
/**
* usb_device_phy_en() - for enabling the 5V to usb gadget
* @enable: to enabling the Phy for device.
*
* This function used to set the voltage for USB gadget mode.
*/
static void usb_device_phy_en(int enable)
{
int volt = 0;
int ret = -1;
if (phy_enable_stat == enable)
return;
if (enable == USB_ENABLE) {
wake_lock(&ab8500_musb_wakelock);
clk_enable(sysclock);
phy_enable_stat = USB_ENABLE;
regulator_enable(musb_vape_supply);
regulator_enable(musb_smps2_supply);
/* Set Vintcore12 LDO to 1.3V */
ret = regulator_set_voltage(musb_vintcore_supply,
1300000, 1350000);
if (ret < 0)
printk(KERN_ERR "Failed to set the Vintcore"
" to 1.3V, ret=%d\n", ret);
ret = regulator_set_optimum_mode(musb_vintcore_supply,
28000);
if (ret < 0)
printk(KERN_ERR "Failed to set optimum mode"
" (ret=%d)\n", ret);
regulator_enable(musb_vintcore_supply);
volt = regulator_get_voltage(musb_vintcore_supply);
if ((volt != 1300000) && (volt != 1350000))
printk(KERN_ERR "Vintcore is not"
" set to 1.3V"
" volt=%d\n", volt);
#ifdef CONFIG_PM
stm_musb_context(USB_ENABLE);
#endif
usb_kick_watchdog();
/* Workaround for USB performance issue. */
cpufreq_usb_connect_notify(true);
prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
DEVICE_NAME, 100);
abx500_set_register_interruptible(device,
AB8500_USB,
AB8500_USB_PHY_CTRL_REG,
AB8500_USB_DEVICE_ENABLE);
} else { /* enable == USB_DISABLE */
if (boot_time_flag)
boot_time_flag = USB_DISABLE;
/*
* Workaround for bug31952 in ABB cut2.0. Write 0x1
* before disabling the PHY.
*/
abx500_set_register_interruptible(device, AB8500_USB,
AB8500_USB_PHY_CTRL_REG,
AB8500_USB_DEVICE_ENABLE);
udelay(100);
abx500_set_register_interruptible(device,
AB8500_USB,
AB8500_USB_PHY_CTRL_REG,
AB8500_USB_DEVICE_DISABLE);
prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
DEVICE_NAME, 50);
/* Workaround for USB performance issue. */
cpufreq_usb_connect_notify(false);
prcmu_release_usb_wakeup_state();
phy_enable_stat = USB_DISABLE;
regulator_disable(musb_vape_supply);
regulator_disable(musb_smps2_supply);
regulator_disable(musb_vintcore_supply);
regulator_set_optimum_mode(musb_vintcore_supply, 0);
/* Set Vintcore12 LDO to 0V to 1.35V */
ret = regulator_set_voltage(musb_vintcore_supply,
0000000, 1350000);
if (ret < 0)
printk(KERN_ERR "Failed to set the Vintcore"
" to 0V to 1.35V,"
" ret=%d\n", ret);
clk_disable(sysclock);
#ifdef CONFIG_PM
stm_musb_context(USB_DISABLE);
#endif
wake_unlock(&ab8500_musb_wakelock);
}
}
